COVERED ELECTRIC WIRE, TERMINAL-EQUIPPED COVERED ELECTRIC WIRE, WIRE HARNESS AND COVERED ELECTRIC WIRE PRODUCTION METHOD

摘要

Provided is a covered electric wire allowing a defect arising not only in the covered electric wire production process but also in the wire harness production step to be detected readily, and thus allowing a defect in a wire harness to be discovered readily. This covered electric wire (1) has: a wire material (11) comprising a metal; a cover layer (12) formed in the periphery of the wire material; and an intercalating piece (13) comprising a metal, a metal oxide or both, and intercalated between the wire material (11) and the cover layer (12), or within the cover layer (12). The average length of the intercalating piece (13) is less than the thickness of the cover layer (12).